75565563 has 4 divisors (see below), whose sum is σ = 100754088. Its totient is φ = 50377040.

The previous prime is 75565559. The next prime is 75565573. The reversal of 75565563 is 36556557.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 75565563 - 2² = 75565559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75565573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12594258 + ... + 12594263.

It is an arithmetic number, because the mean of its divisors is an integer number (25188522).

Almost surely, 2^75565563 is an apocalyptic number.

75565563 is a deficient number, since it is larger than the sum of its proper divisors (25188525).

75565563 is a wasteful number, since it uses less digits than its factorization.

75565563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25188524.

The product of its digits is 472500, while the sum is 42.

The square root of 75565563 is about 8692.8455065071. The cubic root of 75565563 is about 422.7737110442.

The spelling of 75565563 in words is "seventy-five million, five hundred sixty-five thousand, five hundred sixty-three".